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True [87]
3 years ago
6

I was wondering if anyone could explain how to solve this?

Mathematics
1 answer:
vfiekz [6]3 years ago
3 0
(a+b)² can also be written as (a+b) (a+b). When you expand this you get a²+2ab+b²

(a-b)² can also be written as (a-b) (a-b). When expanded this gives a²-2ab-b2

As you can see, this leads to different coefficients of the 'ab' values: for (a+B) ² its 2 for (a-b) ² its - 2
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Are my answers correct?
Kay [80]

Answer:

They are correct

Step-by-step explanation:

And I have to put an explanation bc my other account got blocked bc of all this

4 0
3 years ago
Please solve it i really need helppppppp
VashaNatasha [74]

Answer:

ok the ansewr is b.9

Step-by-step explanation:i had the quizz i faild but it showed me the rigth answer

3 0
3 years ago
Solve the system.<br> y= 22 – 10x + 15<br> y=-10
Yuliya22 [10]

I will try to solve your system of equations.

y=22;−10x+15y=−10

Step: Solvey=22for y:

Step: Substitute22foryin−10x+15y=−10:

−10x+15y=−10

−10x+(15)(22)=−10

−10x+330=−10(Simplify both sides of the equation)

−10x+330+−330=−10+−330(Add -330 to both sides)

−10x=−340

−10x

−10

=

−340

−10

(Divide both sides by -10)

x=34

Answer:

y=22 and x=34Answer:

Step-by-step explanation:

7 0
3 years ago
Lin has picked 1 ½ cups of raspberries, which is enough for ¾ of a cake. How many cups does she need for the whole cake?
Llana [10]
Okay. So, based off of that, if you divide 1 1/2 (3/2) by 3/4, 3/2 * 4/3 is 12/6 or 2. 1/2 cups of raspberries is needed for each fourth of the cake. 1/2 * 4 = 2. Lin will need 2 cups of raspberries for the whole cake.
6 0
4 years ago
Resuelve estas ecuaciones
Natali [406]
E. 5x^2 - 10= 0; 5(x^2 - 2)= 0; x^2= 2; x = √2

f. x^2 - x=0; x(x -1)= 0; x = 0, x= 1

g. 4x^2 + 4x= 0 ; 4x( x + 1) = 0; x = 0, x = -1

h. -x^2 + x = 0; -x(x - 1)= 0; x = 0, x = 1
4 0
3 years ago
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